Woow , just woow , where to start , i have been involved on this big project wich consist of proving that w7 and w8 do pass TRIM to Raid0 array on Intel Chipset with the latest Bios Raid OROM 11.5 and latest Intel RST 11.5 Drivers. For now it's only supported on Z77 chipsets ( In the future we think with a Bios update to Raid OROM 11.5 and Latest RST Drivers most of Intel Chipsets will support this function ). Guys this are amazing Big news as we here in Guru3D have been doing some testing ourselves on this tread: http://forums.guru3d.com/showthread.php?t=365227

Conclusion of the article:

"Conclusion:

RAID 0 TRIM has indeed arrived. It won’t be long before we start seeing board manufacturers serving up 11.5.0.1582 or higher OROMs with their BIOS’s. When they do you can be confident that whether you are running Windows 7 or 8 along with the correct chipset/s and IRST driver your RAID 0 array will have functioning TRIM. Intel has delivered on their promise to give us what we’ve all been waiting for RAID 0 TRIM. As of today there is NOTHING a single drive can do that a RAID 0 Array cannot do better. This day has been a long time coming and brings with it forth coming satisfaction for thousands of INTEL RAID 0 users. Awesome job INTEL, simply awesome!
"

RAID 0 TRIM has indeed arrived. It won’t be long before we start seeing board manufacturers serving up 11.5.0.1582 or higher OROMs with their BIOS’s. When they do you can be confident that whether you are running Windows 7 or 8 along with the correct chipset/s and IRST driver your RAID 0 array will have functioning TRIM. Intel has delivered on their promise to give us what we’ve all been waiting for RAID 0 TRIM. As of today there is NOTHING a single drive can do that a RAID 0 Array cannot do better. This day has been a long time coming and brings with it forth coming satisfaction for thousands of INTEL RAID 0 users. Awesome job INTEL, simply awesome!
" [/B]

Or you could get SSD's with hardware level TRIM like Corsair Force GT's.

With Z77 you'll also most likely need to use USB Bios flashback to do the update, as ASUS EZ Flash 2 will give you some security error.

Thats 100% Correct , i could not flash my own moded Bios or the one that pimp_gimp made for me ( Thanks dude ), im still waiting on some friends at Asus who might get me the Bios i want , im still waiting to use 11.5 on my own new Asus P8Z77-V LK as this board does not have USB Bios flashback and the Bios its protected it is simply impposible to flash on my own , it needs to be done by Asus.

" “Trim on RAID 0 for SSDs is supported in the Intel RST driver versions 11.0 and newer. Currently available for the general public on Intel’s downloads site is RST driver version 11.2 which offers TRIM support on RAID 0 compatible with MS Windows 7 OS on Intel 7 series chipsets (earlier chipsets NOT supported). Intel is also working on a future release providing support for TRIM on RAID 0 on Microsoft Windows 8 OS for Intel 7 series chipsets. “

This is good news that TRIM command will work in a Raid 0 as I just ordered a setup from Amazon that includes a P8z77-V LX mobo, and two HyperX 3K 240GB SSD's and I was planning on running those in a Raid 0 and was concerned about passing the TRIM command on through.

But once in a Raid 0 you still wont be able to update the firmware of individual SSD's will you? That, I think, is just as important or more than the TRIM command. As they come up with better firmwares that improve SSD performance you def need to upgrade firmware.

I'm reading this, and it's not clear to me if I need a RAID ROM higher than: 11.0.0.1339 or NOT...

I have the RST 11.6 driver, on a Asus P8Z77-V PRO with the lastest BIOS, and 2 intel 320 series 120 gb on RAID 0.

How can I benchmark this to find out?

Cheers,
Felipe

Hi Felipe and welcome to Guru3D , use as SSD , Cristal Disk benchmark , Anvil Storage Utilities or PCMark vantage. Run one test at a time , delete something from your OS trhu recicle bin after running the test , this will trigger TRIM and recuperate lost performance , thats how TRIM works on raid0 , more information here: http://www.rwlabs.com/article.php?ca...2&pagenumber=4 ,i hope that helps you understand how TRIM works on Raid0.
We got similar configuration , as im using an Asus P8Z77-V PRO with latest Bios , install running Raid OROM 11.0.0.1339 with latest whql RST 11.6 drivers , using 2x128GB Samsungs 830 Raid0 , TRIM works flawlessly in my Raid0 array , my performance stays always more or less the same and i have not lost performance after 2 months running heavily appointments in 24/7 OS . Buen Dia Felipe Saludos desde Puerto Rico .

I've tried using PCMark... But it was not clear on what should I do before and after a Test..
should I run more then once?
What is the best software to test this?

Cheers,
Felipe

Just run first AS SSD benchmark , take a screenie of those numbers and save in pictures folder name it # 1 , then run pcmark vantage then take a screenshot of the final score and subtest numbers name it # 2 , Run Anvil storage utilities , again when the benchmark finish take a screenie shot on the numbers name it # 3. Redo the benchmars again like stated before taking screenies and named them # 01 , # 02 # 03 and so on , Now go to your OS delete some files , pictures or anything thru the recicle bin , that will trigger TRIM inmediatly and the performance should be restore more or less the same as the first set of benchmarks not the second set of run , meaning performance has been restore. Onced TRIM has done its job rerun the benchmarks and compare the results with the firts set of benchmarks screenis namely #1 , #2 , #3 and so on, the numbers should be more or less the same. Thats my best advice after done many weeks of testing myself. If you dont get it this time with this simple instructions i would suggest Google it , theres nothing to worry about your Raid0 should be running TRIM nicely , so please understand , there is nothing to it , please read into this more and educate yourself a liitle , there is tons of information on the web on this , i can help you of course , but i wont spoon feed you. Please go to google and Read Read Read all the information on this matter. Have a nice day felipe.